Remove FFI_ from CPDFSDK_Environment method names

xfa/fxfa/include/fxfa.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FXFA_INCLUDE_FXFA_H_
 #define XFA_FXFA_INCLUDE_FXFA_H_
 
 #include <vector>
@@ skipping 225 matching lines @@
    * @param[in] wsTitle         - Title string for box.
    * @param[in] wsDefaultAnswer - Initial contents for answer.
    * @param[in] bMask           - Mask the user input with asterisks when true,
    * @return A string containing the user's response.
    */
   virtual CFX_WideString Response(const CFX_WideString& wsQuestion,
                                   const CFX_WideString& wsTitle = L"",
                                   const CFX_WideString& wsDefaultAnswer = L"",
                                   FX_BOOL bMask = TRUE) = 0;
 
-  virtual int32_t GetDocumentCountInBatch() = 0;
-  virtual int32_t GetCurDocumentInBatch() = 0;
-
   /**
    * Download something from somewhere.
    * @param[in] wsURL - http, ftp, such as
    * "http://www.w3.org/TR/REC-xml-names/".
    */
   virtual IFX_FileRead* DownloadURL(const CFX_WideString& wsURL) = 0;
 
   /**
    * POST data to the given url.
    * @param[in] wsURL         the URL being uploaded.
@@ skipping 95 matching lines @@
   virtual void Reset() = 0;
   virtual CXFA_FFWidget* MoveToFirst() = 0;
   virtual CXFA_FFWidget* MoveToLast() = 0;
   virtual CXFA_FFWidget* MoveToNext() = 0;
   virtual CXFA_FFWidget* MoveToPrevious() = 0;
   virtual CXFA_FFWidget* GetCurrentWidget() = 0;
   virtual FX_BOOL SetCurrentWidget(CXFA_FFWidget* hWidget) = 0;
 };
 
 #endif  // XFA_FXFA_INCLUDE_FXFA_H_